focal

Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

adj. Of or relating to a focus.

adj. Placed at or measured from a focus.

from Wiktionary, Creative Commons Attribution/Share-Alike License

adj. Belonging to, concerning, or located at a focus

adj. limited to a small area

from the GNU version of the Collaborative International Dictionary of English

adj. Belonging to,or concerning, a focus; as, a focal point.

from The Century Dictionary and Cyclopedia

Of or pertaining to a focus: as, a focal point.

In optics, of a mirror or lens, the distance (also called the focal length) from its center to the principal focus (see focus); of a telescope, the distance between the focal plane and the object-glass.

When you see a major sports network featuring anÂhours longÂstory that’s main focal point is an over the hill QB (in age, not football ability) mowing his grass and playing catch with high schoolers, you know the network has an obsession.